Given the amount of interest these girls gathered in the last few months, I'd say that sex is being sold with Bitcoin, and not an awful lot is being sold anyways 
Indeed. At least they have found a way to make something completely technical appealing although I doubt anyway is turning the sound on rather than just watching...That's true...
Maybe next step is a plot on a porn movie where the guy pays for an "escort" with Bitcoin?
Any videos containing hot girls showing some skin will get tons of views guaranteed, nothing new. What would matter is how much % of the people that visit it are going to actually look into Bitcoin and not only the girl and continue browsing the internet.
They're aren't getting that many views... Or that many donations, for that matter, lol